To resolve this, here is what you need to do.
1.) Open the cover and when the printhead (ink carriage) comes to the center, pull the power cord out of the wall or the back of the printer.
2.) Wait about a minute or so, then move the carriage all the way to the left with your hand. G
3.) Get a flashlight and see if there are any obstructions.
4.) Move the carriage with your hand all the way to the right. Check for any obstruction.
5.) Remove the rear turn around door and check for obstruction there.
6.) You can take the entire unit, turn it upside down, shake it firmly a few times, and anything you can't see will fall out.
7.) Plug the printer back in and try to print.
Let me know if this works.